Comparative study of chitosan and silk fibroin staple microfibers on removal of chromium (VI): Fabrication, kinetics and thermodynamic studies

Abdel-Mohsen, A.M.; Jančář, J.; Kalina, Lukáš; Hassan, Asaad F.

doi:10.1016/j.carbpol.2020.115861

Cited by 46 publications

(10 citation statements)

References 78 publications

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“…We also used XPS to further evaluate the chemical structure and identify the elemental composition of silk nanofibers and dye-adsorbed silk nanofibers. Figure b shows that the peaks at 283.6, 397.7, and 529.6 eV indicate the presence of C 1s, N 1s, and O 1s respectively, which are well agreed by reported silk nanofibers. , Briefly, we also deconvoluted C 1s, N 1s, and O 1s peaks to completely recognize the elemental alignment of silk nanofibers before and after intersection with dye (acid blue 117). In this context, Supporting Information Figure 3a reveals that the peak of 383.6 eV has three locations for carbon atoms, suggesting the presence of carbon atoms in the arrangement of C bonds, CC at 383.6 eV, CH 2 –NH at 285.7 eV, and OC–N at 286.6 eV, respectively.…”

Section: Resultssupporting

confidence: 81%

Regenerated Silk Nanofibers for Robust and Cyclic Adsorption–Desorption on Anionic Dyes

et al. 2022

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In recent years, adsorption-based membranes have been widely investigated to remove and separate textile pollutants. However, cyclic adsorption–desorption to reuse a single adsorbent and clear scientific evidence for the adsorption–desorption mechanism remains challenging. Herein, silk nanofibers were used to assess the adsorption potential for the typical anionic dyes from an aqueous medium, and they show great potential toward the removal of acid dyes from the aqueous solution with an adsorption rate of ∼98% in a 1 min interaction. Further, we measured the filtration proficiency of a silk nanofiber membrane in order to propose a continuous mechanism for the removal of acid blue dye, and a complete rejection was observed with a maximum permeability rate of ∼360 ± 5 L·m–2·h–1. The Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy studies demonstrate that this fast adsorption occurs due to multiple interactions between the dye molecule and the adsorbent substrate. The as-prepared material also shows remarkable results in desorption. A 50-time cycle exhibits complete adsorption and desorption ability, which not only facilitates high removal aptitude but also produces less solid waste than other conventional adsorbents. Additionally, fluorescent 2-bromo-2-methyl-propionic acid (abbreviated as EtOxPY)-silk nanofibers can facilitate to illustrate a clear adsorption and desorption mechanism. Therefore, the above-prescribed results make electrospun silk nanofibers a suitable choice for removing anionic dyes in real-time applications.

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Section: Resultssupporting

confidence: 81%

Regenerated Silk Nanofibers for Robust and Cyclic Adsorption–Desorption on Anionic Dyes

et al. 2022

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“…The first weight loss at 100–250°C was related to the volatilization of some free water and low boiling point compounds. The second weight loss at 250–550°C originated from the decomposition and that weight loss was caused by the destruction of the regenerated silk fibroin molecular side chain, while the final weight loss at 550–700°C belonged to the destruction of the regenerated silk fibroin molecular main chain 34 …”

Section: Resultsmentioning

confidence: 99%

A novel high mechanical and excellent hydrophilic electrospun polyurethane‐silk‐bioactive glass nanofiber film for rotator cuff injury repair

Duan

Ling

Sun

et al. 2021

J of Applied Polymer Sci

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Rotator cuff injury is the most common muscle injury in bone surgery and there was still enormously challenging to completely repair it. Disturbed by mechanical stability and biocompatibility, most implants have failed to relieve symptoms and prevent the development of osteoarthritis. Herein, we have firstly fabricated novel electrospinned nanofiber membranes by integrating the excellent mechanical properties of polyurethane (PU), the good biocompatibility of silk fibroin with the osteogenesis properties of bioactive glass (PSB). The obtained results have exhibited that the PSB nanofiber film possessed excellent mechanical properties with the tensile stress have reached 14.6 MPa and the tensile strain reached 70%, which had extremely remedied the properties of pure silk film (3.8 MPa and the tensile strain 7.9%). Especially, PSB has shown superior hydrophilicity (WCA) than silk (WCA) and PU (WCA) groups.Furthermore, we have endowed the PSB with osteogenesis by doping bioactive glass (BG) in it. The PSB film can long-term release functional ions (Si and B ions) that benefit bone tissue repair, and the CCK-8 and ALP results have also confirmed the excellent biocompatibility and osteogenesis of PSB. Hence, the novel PSB film may provide a new treatment strategy for repairing rotator cuff injury.

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“…42 In the fitting curve of N 1s, there are mainly 400.6 eV, 398.8 eV and 399.5 eV peaks assigned to -NH 3 + , -NH 2 and -NH-, respectively. 43 The C 1s spectrum of CT4 contained all the characteristic peaks on CNFs and MWCNTs, and the peaks were all shifted to the left, indicating enhanced bonding energy. This was related to the previous hydrogen bonding between CNF and MWCNTs (Fig.…”

Section: Xps Analysismentioning

confidence: 96%

Characterization and evaluation of the adsorption potential of chitosan-impregnated cellulose nanofiber multi-walled carbon nanotube aerogel for copper ions

et al. 2022

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Comparative study of chitosan and silk fibroin staple microfibers on removal of chromium (VI): Fabrication, kinetics and thermodynamic studies

Cited by 46 publications

References 78 publications

Regenerated Silk Nanofibers for Robust and Cyclic Adsorption–Desorption on Anionic Dyes

Regenerated Silk Nanofibers for Robust and Cyclic Adsorption–Desorption on Anionic Dyes

A novel high mechanical and excellent hydrophilic electrospun polyurethane‐silk‐bioactive glass nanofiber film for rotator cuff injury repair

Characterization and evaluation of the adsorption potential of chitosan-impregnated cellulose nanofiber multi-walled carbon nanotube aerogel for copper ions

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